The ark lands after The Flood. Noah lets all the animals
out. Says, "Go and multiply." Several months pass. Noah decides to
check up on the animals. All are doing fine except a pair of snakes.
"What's the problem?" says Noah.

"Cut down some trees and let us live there", say
the snakes. Noah follows their advice. Several more weeks pass. Noah checks on
the snakes again. Lots of little snakes, everybody is happy. Noah asks,
"Want to tell me how the trees helped?" "Certainly", say the
snakes. "We're adders, and we need logs to multiply."

Three men are in a hot-air balloon. Soon, they find
themselves lost in a canyon somewhere. One of the three men says, "I've got
an idea. We can call for help in this canyon and the echo will carry our voices
far."
So he leans over the basket and yells out, "Helllloooooo! Where are
we?" (They hear the echo several times).
15 minutes later, they hear this echoing voice: "Helllloooooo! You're
lost!!"
One of the men says, "That must have been a mathematician." Puzzled,
one of the other men asks, "Why do you say that?" The reply: "For
three reasons.
(1) he took a long time to answer,
(2) he was absolutely correct, and
(3) his answer was absolutely useless."